i have an 89 iroc and i recently swapped a speedometer because the needle on my old one broke but once i put the new one in it's 5 off when i go about 10- 25 mph and once i get to about 40mph or higher it's off by 15 mph has anyone else have this problem or any solutions?

 

If the speedo is reading low and/or bouncing, it's possible that in replacing the speedo head, you dislodged 20+ years of crude in the cable/housing and that that crud is causing problems. Check the following link for the cleaning procedure:

https://www.thirdgen.org/forums/inte...eedo-woes.html

If the speedo is reading high and/or bouncing, I'd guess the head is defective.

JamesC

 

thanks i'll check and see if that does anything